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Growth and Photoluminescence of Epitaxial CeO2 Film on Si (111) Substrate |
GAO Fei; LI Guo-Hua1; ZHANG Jian-Hui;QIN Fu-Guang;YAO Zhen-Yu;LIU Zhi-Kai;WANG Zhan-Guo;LIN Lan-Ying |
Laboratory of Semiconductor Materials Science, 1National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
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Cite this article: |
GAO Fei, LI Guo-Hua, ZHANG Jian-Hui et al 2001 Chin. Phys. Lett. 18 443-444 |
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Abstract CeO2 film with a thickness of about 80 nm was deposited by a mass-analyzed low-energy dual ion beams deposition technique on Si (111) substrate. Reflection high-energy electron diffraction and x-ray diffraction measurements showed that the film is a single crystal. The tetravalent state of Ce in the film was confirmed by x-ray photoelectron spectroscopy measurement, indicating that stoichiometric CeO2 was formed. Violet/blue light emission (379.5 nm) was observed at room temperature, which may be tentatively explained by charge transitions from the 4f band to the valence band of CeO2.
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Keywords:
78.55.Hx
81.15.Jj
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Published: 01 March 2001
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PACS: |
78.55.Hx
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(Other solid inorganic materials)
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81.15.Jj
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(Ion and electron beam-assisted deposition; ion plating)
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